﻿#region Copyright (c) 2003 - 2008, Andreas Mueller
/////////////////////////////////////////////////////////////////////////////////////////
// 
// Copyright (c) 2003 - 2008, Andreas Mueller.
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// Contributors:
//    Andreas Mueller - initial API and implementation
//
// 
// This software is derived from software bearing the following
// restrictions:
// 
// Copyright (c) 1994
// Hewlett-Packard Company
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Hewlett-Packard Company makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// Copyright (c) 1996,1997
// Silicon Graphics Computer Systems, Inc.
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Silicon Graphics makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// (C) Copyright Nicolai M. Josuttis 1999.
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// 
/////////////////////////////////////////////////////////////////////////////////////////
#endregion


using NStl.Collections;
using NUnit.Framework;
using System;
using System.Collections.Generic;
using NUnit.Framework.SyntaxHelpers;
using NStl.Exceptions;

namespace NStl.NUnit.Support
{
    public abstract class ReadOnlyListFixture<T> : ReadOnlyCollectionFixture<T>
    {
        protected sealed override IReadOnlyCollection<T> CreateCollectionT()
        {
            return CreateListT();
        }
        protected override IReadOnlyCollection<T> CreateEmptyCollectionT()
        {
            return CreateEmptyListT();
        }
        protected static IReadOnlyList<T> ListT
        {
            get { return (IReadOnlyList<T>)CollectionT; }
        }
        protected abstract IReadOnlyList<T> CreateListT();
        protected abstract IReadOnlyList<T> CreateEmptyListT();

        [Test]
        public void Indexer()
        {
            for (int i = 0; i < ListT.Count; ++i)
                Assert.AreEqual(i, ListT[i]);
        }
        
        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void IndexerFail()
        {
            T tmp = ListT[ListT.Count];
        }
        [Test]
        [ExpectedException(typeof(ArgumentOutOfRangeException))]
        public void IndexerFailNegative()
        {
            T tmp = ListT[-1];
        }

        [Test]
        public void IndexOf()
        {
            for (int i = 0; i < ListT.Count; ++i)
            {
                T atI = ListT[i];
                Assert.AreEqual(i, ListT.IndexOf(atI));
            }
        }
        private T LastOfCollection()
        {
            IEnumerator<T> e = CollectionT.GetEnumerator();
            T current = default(T);
            while (e.MoveNext())
                current = e.Current;

            return current;
        }
        [Test]
        public void Back()
        {
            Assert.That(ListT.Back(), Is.EqualTo(LastOfCollection()));
        }
        [Test]
        [ExpectedException(typeof(ContainerEmptyException))]
        public void BackFailsOnEmptyContainer()
        {
            CreateEmptyListT().Back();
        }
    }
}
